Matthew 18:16

ἐὰν δὲ μὴ ἀκούσῃ παράλαβε μετὰ σοῦ ἔτι ἕνα ἢ δύο ἵνα Ἐπὶ στόματος μαρτύρων τριῶν σταθῇ πᾶν ῥῆμα

ean de mē akousē paralabe meta sou eti hena ē dyo hina epi stomatos martyrōn triōn stathē pan rhēma

if however not will hear take with you still one or two so that upon [the] mouth witnesses three may be strengthened everything saying